Interchangeable carriage



C. SPIRO.

INTERCHANGEABLE CARRIER.

APPLICATION FILED FEB. I4, IQZO.

Patented July 5, 1921.

2 SHEETa-SHELT I C. SPIRO.

INTERCHANGEABLE CARRIER.

A PPLicATloN FILED FEB.14, 1920.

Patente July 5, 192i..

2 SHEETS-ShCET 2- INVENTOR. CHA fn ES SP/@o WI TNEss.-

A TTORNE Y. '7

UNIT@ .PTE-NT OFFICEQ CHARLES SPIRO. OF NEW YORK. N.

Y.. ASSIGNOR TO FEDERAL ADDING IEACHINE CORPORATION', OF NEWr YORK. N. Y.. A CORPORATION OF NEW JERSEY.

- y 1 11N TLRCHJLNGEABLI) CARRIAGEBv-'QT Application .led February 14, 1920.

'/'o lfb/fom. it 'may concern lie it linown that I, (linnen-:s Siano, citizen of the lfnited States, residing at New York. in the county of New York and State of New'l'ork, have invented certain new and useful Inillrovenients in interchangeable (arriages, of which the following is a specilication.

This invention relatesto an interchangeable carriage construction for typewriting machines and particularly to a form thereof by which carriages of diii'erent lengths or .sizes may be conveniently applied to a single frame containingthe printing mechanism.

l'he invention has for an object, to provil e an interlocked connection between the carriage base and the typewriter frame prol.lded with the printing elements. which connection is controlled by a unita-ry member, which in the releasing action forthe carriage simultaneously locks the eseapenient mechanisin.

Another and further object of the invention is to provide a shiftable member mounted upon the typewriter frame and connccted to effect the longitudinal travel of Athe carriage base relative to cf)operatingf leaking' members upon said frame.

Another object of the invention is to provide an improved construction of controlling lever di posed to engage and lock the escapenient when the carriage is released from the l'raine and to siniultaneousl \v engage and shift the carriage in such releasingv action.

.X further object of the invention is to provide an improved construction of plutr plate having means to enter the race-ways ol'v the (.-arriage base, and provided with linger-holds by which the carriage may be, handled for removal or replacement.

(lther and further objects and advantages of the invention will be hereinafter set forth and thenovel features thereof defined by the appended claims.

Figure l is a bot-tom 4plan of a typewriter carriage having the invention applied thereto.

Fig. 2 is a similar view at the right end of the top plate of the typewriter frame.

Fig. 3 is a vertical section on line of F 1g. 2.

Fig. 4 is a detail plan of the carriage base and locking post, connected.

Specification of Letters Patent.

num.

- i r Patented July 5, 192i. serial No. 358,594.

Fig. 5 is a section on line 5-.5 of'Fig. l, and

Fig. 6', a detail 'perspective of the retaining plug.

Lilie numerals refer to like parts in the several figures of the drawings.

The numeral l() designates the frame of a typewriter, which may be of any desired construction or configuration, and the top plate ll thereof is provided at opposite ends with seats l2 upon which the carriage i3 rests -When in operative position. These seats are each provided with locking posts Mawhich may be of any desired character but, for the purpose of their adjustment, are preferablyt'ormedlas screw threaded into the top plate ll and locked in adjusted position by a set-screw l5 threaded upward from the under face of said top plate to engage and hold the threaded end of the post 14 by pressure thereon, as shown in Fig. 5. In this form of the invention, the. posts are formed with a head adapted to pass through an aperture 1.7 in the base plate 18 of the carriage. The lower portion of this aperture is of substantially the diameter of the head 1G, but the upper portion of the aperture is provided with a shoulderV l5) adapted to pass beneath said head for the purpose of locking the base plate in position when given a longitudinal movement upon the seat l2, and 5.

The base plate of the carriage is disposed between the side rails 2O thereof, and intermediateof these parts are the usual race- 'ays for the ball carriers 2l, so that the carriage may be yfree to reciprocate upon the base plate when secured to the frame.

The carriage base 1S is also provided intermediate of its ends with a lateral seat. or recess 22, preferably of graduated'deptli as shown in Fig. 3, and adapted to receive means for shifting the carriage base into locking position. v

hese means may be of any preferred character, adesirable form thereof being pin 2 4 carried by the shiftingI and locking leser 25, which is pivoted at 26 and formed at rcs inner end with an angular portion 2T, having a toot-h 28 disposed to` engage and lock the feeding pinion 29, carried by the spring drum of the escapement mechanisni, as indicated by dotted lines at 3Q as shown in Figs.

. in the usual manner.

' releasing of the carriage 'is ei'ected usuel manner.

25 may be providedwith e depressed-por-- i between the parts.

inFig. 2. I This gear coperates with a feed rack 33E upon the carriage bese/.fin the The lock and release lever tion 31 intermediate of its ends, to allow for the passage of members carried by the carriage in its travel, end the outer end thereof is provided Wit-h en operating handle 32, and also with a holding stud 33 formed thereon and adapted to seet iii-either recess 34, in the top plete. If desired, a keeper 35 may be disposed shove this lever, es shown in Figs. 2 and 3.

When it is desired to remove the carriage from the frame, the shifting mechanism for the platen 36 thereon is disconnected from its coperating shift rail 37 ,'Which, carried by the arms 38 pivoted at 39, lifts the platen For this purpose the roller 40, mounted upon the shift rail 37, is carried by en ann el, pivoted et 42 and is normally held in upright position by a spring 43, bearing against an extended end of the arm. Thearm pivot is carried by the reciprocating shift member Llflfend its swinging movement limited by e stop 45.

When the machine is to 'be transported or the carriage stored/it is desirable to secure the base end side members of the ball rece against relative movement, and for this purpose the plug Yplate 50 is used and has pins 51 entering the opposite ends of the rece- Ways for the bearing bells. rlhe plate is provided with the inger holds 52, by which the carriage may be conveniently handled, and the ends thereof are extended as at 53 and 54, to contact with the ends of the side rails of the carriage base. rThese plug plates may be secured in position in any desired manner, for instance, by screws entering the ends of the carriage base 18, and

the pins 51 ere of sufficiently larger diemeter than the balls to separate the iwalls of the raceway when inserted, so that the pressure is relieved from the bell-bearings and the part rigidly held to prevent all injury thereto or relative movements'of the pirts.

The operation of the invention will b apparent from the foregoing description, from which it will be seen that the locking and by a unitary member which simultaneously sli/lifts the carriage relative to the fixed locking yposts, and engages and locke the driving position, as shown in Fig. 2.

The construction of the I interlocking means between thecarriage and top plate provides for a secure retention vot the parts in close contact :with e minimum of reciprocating movement, and evoids all vibration The connect-ion between the locking and release lever and the carmechanism When the carriage is in unlocked riage base also permits 'this shifting of the bese Without binding action or tendency to i ,essere lateral movement as the pin `from the lever treve'isfin .the curved recess, end con` sates tenth@ reciprocating movement o base. The retaining plug forms e very com l. ln a typewriteme treme, 'a carriage i base adapted to be mounted thereon, locking means between saidbese end frame, feeding mechanism for controlling the travel of said carriage, and a unitary device for controlling; the interlocking ineens end Seid feeding mechanism.

2. ln a typewriter, a frame, e carriage base adapted to be mounted thereon, interlocking means between said base and. freine, feeding mechanism for cont-rolling the trejvel of said carriage, and a shittable member mounted to engage seid carriage' and feeding' nxeclmnism.

3. ln a typewriter7 a treme, e carriage base adapted tofbe mounted thereon, interlocking means between said base and freine, and a shiitable member disposed to impart e. longitudinal movement to seid carriage to control seid interlocking means.

4e. in e typewriter, e frame, e carriage base adapted to be mounted thereon, interlocking means between seid bese and treme, and a shift lever having pivotal contact with the buse of said'carriege for shifting the same longitudinally;

5. ln a typewriter, a treme, a'carriege bese adapted to be mounted thereoin interlocking means between sai'd bese and freine, 'feeding mechanism iorvcontrolling the travel loi said (carriage, and a shift lever having pivotal Contact with the buse of seid carriage 'for shifting' the same longitudinally and having a member to engage said leading mechanism whengthe carriage is released from the frame.

aperture to receive seid post and. e. portion 'Y to pass beneath the head thereof, a pivoted shift lever upon the frame, a connection between said lever and carriage base, and a member extended from said lever to control the carriage feeding mechanism when in one position.

8. ln a typewriter, a frame, a lockingpost disposed thereon, a carriage base having an aperture to receive said post and a portion to pass beneath the head thereof, a pivoted shift lever upon the trarne, a pin from said leverentering a lateralrecess in the carriage hase, and an angular arm extended from Said lever and provided with a tooth to retain a member ot the carriage feeding mechanism.

9. ln a typewriter, a frame, a locking post disposed thereon, a carriage base having an aperture to receive said post and a portion to pass beneath the head thereof, a pivoted shift lever upon the frame, a pin from said lever entering, a lateral recess in the carriage base, an angular arm extended from said lever and provided with a tooth to retain a member ot' the carriage 'feeding'mechanism, and meansV engaging said lever at its operated end to retain it in shifted position.

l0. ln a typewriter, a frame having seats upon the, top plate thereona locking. post threaded into said seats, a carriage base plate having' an apertureto receive said post and a shoulder at one side of said aperture to pass beneath the head of the post, and a shifting member mounted upon the top plate and having` a part engaging the carriage hase to reciprocate the same.

ll. 'n a typewriter, a frame having seats upon the top plate thereof, a lockingpost threaded into said seats, a carriage hase plate having an. aperture to receive said post and a shi "der at one side oiE said aperture to pass beneath the head ot the post, a

'shifting member mounted upon the top plate and having; a part engaging' the carriage hase to reciprocate the same, and a retaining screw threaded into the top plate to engage said post and lock the same in adjusted position.

l2. In a typewriter, a trame provided With securing posts upon its top plate, a carriage base constructed to interlock with said posts, a shifting and locking lever pivoted upon the top plate, and a pin extending laterally 'from said lever and disposed Within a lateral vertical segmental recess in said hase plate.

13. In a typewriter, a frame provided with securing posts upon its top plate, a carriage base constructed `to interlock with said posts, a shiftingr and locking lever pivoted upon the top plate, a pin extending laterally from said lever and disposed Within a lateral ertical segmental recess in said base plate, Vand an angularly vdisposed pawl arm carried hy said shift lever and adapted to engage a feed member for the carriage.

14. n a typewriter, a frame provided with securing posts upon its top plate, a carriage base constructed to interlock with said posts, a shifting and locking lever pivoted upon the top plate, a pin extending laterally from said lever and disposed Within a lateral vertical segmental recess in said base plate, a handle carried by the outer end of said lever, a keeper beneath which said end ot' the lever travels, and a projection carried by the lever to engage and retain it in opposite shifted positions.

l5. In a typewriter, a plug plate secured to thc carriage base at one end and having pins entering the race-Ways thereof, and a linger-hold extended from said plate beyond the said base.

16. In a typewriter, a plugr plate secured to the carriage base at one end and having pins entering the race-Ways thereof, and a finger-hold extended from said plate beyond the said hase, said plate having extended portions at each end to engage the side rails of the carriage base.

17. A plug' plate provided With parallel pins extended in one direction therefrom, an apertured hold extended in an opposite direction,.and ends projected beyond said pins.

in testimony whereof I ax my signature.

cHAnLns errnot 

